Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Investigation of temperature and velocity fluctuations through the solar photosphere with the Na I D lines

Abstract : In this work we explore the diagnostic properties of the Na I D resonance lines by calculating the response functions of their line profiles to temperature and velocity perturbations in the atmosphere. We propose a method to transform spectral line intensity fluctuations measured at several wavelengths into temperature and velocity disturbances at different height levels. Results from tests done with several theoretical models of perturbations are discussed. Perturbations that vary as linear functions of depth are efficiently reproduced. The method also provides good estimations for exponential models. As an example we present an application to solar granulation data obtained with Multichannel Subtractive Double Pass (MSDP) spectroscopy.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-02178316
Contributeur : Thierry Roudier <>
Soumis le : lundi 25 janvier 2021 - 08:05:03
Dernière modification le : mardi 26 janvier 2021 - 03:27:26

Fichier

aa1067.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Citation

M. Eibe, P. Mein, Th. Roudier, M. Faurobert. Investigation of temperature and velocity fluctuations through the solar photosphere with the Na I D lines. Astronomy and Astrophysics - A&A, EDP Sciences, 2001, 371 (3), pp.1128-1136. ⟨10.1051/0004-6361:20010464⟩. ⟨hal-02178316⟩

Partager

Métriques

Consultations de la notice

376

Téléchargements de fichiers

30